<template>
    <div>
        <!--面包屑导航-->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图-->
        <el-card >
            <!--添加角色按钮区域-->
            <el-row>
                <el-col>
                    <el-button type="primary" @click="addRoleClick">添加角色</el-button>
                </el-col>
            </el-row>
            <!--角色列表区域-->
            <el-table :data="Rolelist" border stripe>
                <!--下拉框-->
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <el-row v-for="(item1,i1) in scope.row.children" :class="['bdbottom','vcenter',i1 === 0 ? 'bdtop':'']"  :key="item1.id">
                            <!-- 渲染一级权限  -->
                            <el-col :span="5">
                               <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>
                            <!-- 渲染二级和三级权限  -->
                            <el-col :span="19">
                                <!--渲染二级-->
                                <el-row :class="['vcenter',i2===0?'':'bdtop']" v-for="(item2,i2) in item1.children" :key="item2.id">
                                    <el-col :span="6">
                                        <el-tag closable @close="removeRightById(scope.row,item2.id)" type="success">{{item2.authName}}</el-tag>
                                        <i class="el-icon-caret-right"></i>
                                    </el-col>
                                    <el-col :span="18">
                                        <el-tag closable @close="removeRightById(scope.row,item3.id)" type="warning" v-for="(item3,i3) in item2.children" :key="item3.id">{{item3.authName}}</el-tag>
                                    </el-col>
                                </el-row>
                            </el-col>
                        </el-row>
                    </template>
                </el-table-column>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作" >
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="editRoleClick(scope.row)">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeRoleClick(scope.row)">删除</el-button>
                        <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                    </template>
                </el-table-column>
            </el-table>

        </el-card>

        <!--分配权限对话框-->
        <el-dialog title="分配权限" :visible.sync="setRightDialogVisible" width="50%" @close="setRightDialogClosed">
            <!--树形控件-->
            <el-tree ref="treeRef" :data="rightsList" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defkeys"></el-tree>
            <!--按钮区域-->
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRightDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="allotRights">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 添加角色的对话框-->
        <el-dialog title="添加角色" :visible.sync="addRoleDialogVisible" width="50%">
            <el-form :model="addRoleForm"  ref="addRoleFormRef" label-width="70px">
                <el-form-item label="角色名称">
                    <el-input v-model="addRoleForm.roleName"></el-input>
                </el-form-item>
                <el-form-item label="角色描述">
                    <el-input v-model="addRoleForm.roleDesc"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="addRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveNewRole">确 定</el-button>
              </span>
        </el-dialog>
        <!-- 编辑更改新角色信息-->
        <el-dialog title="修改角色" :visible.sync="editRoleDialogVisible" width="50%">
            <el-form :model="editRoleForm"  ref="editRoleFormRef" label-width="70px">
                <el-form-item label="角色名称">
                    <el-input v-model="editRoleForm.roleName"></el-input>
                </el-form-item>
                <el-form-item label="角色描述">
                    <el-input v-model="editRoleForm.roleDesc"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveEditRole">确 定</el-button>
              </span>
        </el-dialog>
    </div>
</template>

<script>
    export default {
        data(){
            return{
                //所有角色列表数据
                Rolelist:[],
                //控制分配权限的对话框的显示与隐藏
                setRightDialogVisible:false,
                //所有权限的数据
                rightsList:[],
                //树形控件的属性绑定对象
                treeProps:{
                    label:'authName',
                    children:'children'
                },
                //默认选中的节点id的数组
                defkeys:[],
                //当前即将分配角色的id
                roleId:'',
                //控制添加角色对话框的显示与隐藏
                addRoleDialogVisible:false,
                //添加角色的表单对象
                addRoleForm:{},
                //控制编辑对话框的显示与隐藏
                editRoleDialogVisible:false,
                editRoleForm:{},
                //编辑的角色的id
                editRoleId:''


            }
        },
        created(){
            this.getRolesList();
        },
        methods:{
            //获取所有角色的列表
            async getRolesList(){
                const {data:res}=await this.$http.get('roles');
                if(res.meta.status !== 200){
                    return this.$message.error('获取角色列表失败！');
                }else{
                    this.Rolelist=res.data
                    // console.log(this.Rolelist)
                }
            },
            async removeRightById(role,rightId){
                const confirmRes=await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).catch(err=>err);
                if(confirmRes!=='confirm'){
                    return this.$message.info('已取消删除该权限!');
                }else{
                   const {data:res}=await this.$http.delete(`roles/${role.id}/rights/${rightId}`);
                   if(res.meta.status!==200){
                       return this.$message.error('删除失败！');
                   }else{
                       this.$message.success('删除成功！');
                       // this.getRolesList()
                       role.children=res.data;
                   }
                }
            },
            //显示分配权限的对话框
            async showSetRightDialog(role){
                this.roleId=role.id

                const {data:res}=await this.$http.get('rights/tree');
                if(res.meta.status!==200){
                    return this.$message.error('获取权限数据失败！');
                }else{
                    this.rightsList=res.data
                    // console.log(this.rightsList)
                }

                //递归获取三级节点的id
                this.getLeafKeys(role,this.defkeys);

                this.setRightDialogVisible=true
            },
            //通过递归形式，获取角色下所有三级权限的id,并保存到defkeys数组中
            getLeafKeys(node,arr){
                if(!node.children){
                    //如果当前node节点不包含node属性，则是三级属性
                    return arr.push(node.id);
                }else{
                    node.children.forEach(item=>{
                        this.getLeafKeys(item,arr)
                    })
                }
            },
            //监听分配权限对话框的关闭时间
            setRightDialogClosed(){
                this.defkeys=[];
            },
            //点击为角色分配权限
            async allotRights(){
                const keys=[...this.$refs.treeRef.getCheckedKeys(), ...this.$refs.treeRef.getHalfCheckedKeys()];
                // console.log(keys)
                const idStr=keys.join(',');
               const {data:res}= await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr});
                if(res.meta.status!==200){
                    return this.$message.error('分配权限失败！');
                }else{
                    this.$message.success('分配权限成功！');
                    this.getRolesList();
                    this.setRightDialogVisible=false;
                }
            },
            //点击添加角色的按钮
            addRoleClick(){
                this.addRoleDialogVisible=true;
            },
            //点击确定，保存新建的角色
            async saveNewRole(){
                const {data:res}=await this.$http.post('roles',this.addRoleForm);
                // console.log(res)
                if(res.meta.status !== 201){
                   return this.$message.error('添加角色失败！');
                }else {
                    this.$message.success('添加角色成功！');
                    this.getRolesList();
                    this.addRoleDialogVisible = false;
                }
            },
            //编辑修改角色
            async editRoleClick(role){
                this.editRoleId=role.id;

                const {data:res}=await this.$http.get('roles/'+role.id)
                // console.log(res)
                if(res.meta.status !==200){
                    return this.$message.error('查询用户信息失败!');
                }
                this.editRoleForm=res.data;
                this.editRoleDialogVisible=true;
            },
            //保存编辑的角色
            async saveEditRole(){
                const {data:res} =await this.$http.put('roles/'+this.editRoleId,{roleDesc:this.editRoleForm.roleDesc,roleName:this.editRoleForm.roleName})
                // console.log(res)
                if(res.meta.status !== 200){
                    return this.$message.error('修改角色失败！');
                }else {
                    this.$message.success('修改角色成功！');
                    this.getRolesList();
                    this.editRoleDialogVisible = false;
                }
            },
            //删除角色
            async removeRoleClick(role){
                this.editRoleId=role.id;

                const confirmRes=await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).catch(err=>err);

                if(confirmRes !== 'confirm'){
                   return this.$message.info('已取消删除操作！');
                }else{
                    const {data:res}=await this.$http.delete('roles/'+this.editRoleId);
                    // console.log(res)
                    if(res.meta.status!==200){
                        return this.$message.info('删除角色失败！');
                    }else{
                        this.$message.success('删除角色成功！');
                        this.getRolesList();
                    }
                }
            }
        }
    }
</script>

<style scoped>
.el-tag {
    margin: 7px;
}
.bdtop{
    border-top: 1px solid #eee;
}
.bdbottom{
    border-bottom: 1px solid #eee;
}
.vcenter{
    display: flex;
    align-items: center;
}
.el-table{
    margin-top: 10px;
}
</style>
